Most sales are held rain or shine; each listing has contact information if you need additional information. Some are preorder only but it's also worth checking if some sales offer a preordering option in addition to their day-of-event sale; this will guarantee that you get the plants you covet. Also worth noting: We'll be updating this list regularly, so check back often.

(Want to add your sale to this list? Send an email with the pertinent information to sunday@tribune.com.)